Nibe VEDEX 4000, Руководство по установке и обслуживанию

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18 VEDEX 4000
Primary air control Lower turbulators air control
General instructions
Secondary and primary air valves located on both
sides of the boiler are used for the distribution of air
within the combustion chamber.
The way the wood is chopped, its type and the mois-
ture content are all determining factors that affect the
function and efficiency of the boiler.
Adjust the size of the wood to fit the hearth. Suitable
length of chopped wood for VEDEX 4000 is 0.5m.
The wood is placed on the ceramic grate.
The combustion process works by reverse combustion
where the combustion gases are forced down through
the grate by an exhaust fan. The fan is controlled by
the flue gas temperature. A damper ensures that a self
induced draught does not occur when the fan is off .
The fan is modulated according to the entered ex-
haust gas temperature and boiler water temperature
parameters. When the door are opened, the fan en-
ters 100% of the power.
Always use dry wood. Wood with a high moisture
content reduces the combustion temperature and
causes increased amounts of environmentally harm-
ful emissions as well as reducing efficiency. Extreme -
ly dry wood can cause too large a fire which can cre -
ate large amounts of gas. In addition, there is a risk of
flashover, which in turn causes irregular combustion.
Carpentry off cuts can be used but should be mixed
with other wood. All wood over 10 cm must be split.
Only use untreated and clean wood. Combustible
gases are created as the wood heats up. These burn
at temperatures between 300 - 900°C. The gases
make up75% of the wood’s energy content, the rest
is in the charcoal created, which also then burns.
Final combustion occurs in the compartment under
the grate after the supply of secondary air.
Primary air
valves
Secondary
air valves
• Primary air valves provide air to the upper section
of the combustion chamber.
• Secondary air valves provide air to the bottom section
of the combustion chamber, which is fed to the grate.
During the firing up process, open the primary air
valves to properly supply the required amount of oxy-
gen/air needed for the combustion process. The sec-
ondary air valves should be closed during the firing up.
During the combustion process we recommend, to
open the secondary air valves about 90% to properly
supply the right amount of oxygen/air needed for the
combustion process. The primary air valves should
be opened only for 2-3 mm .
Valves completely closed:
Valves completely open:
Move the
handle to
open
In the set with the boiler there are additional 4 turbula-
tors. These turbulators should be installed in the fur-
nace chamber under the ash tray (see figure below).
TOP VIEW FRONT VIEW
FRONT